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Increased particulate matter exposure is associated with worse dry eye metrics, after adjusting for humidity, according to a study published in JAMA Ophthalmology. The study also found that humidity is positively associated with dry eye metrics, potentially due to the fact that higher humidity increases microbial growth and subsequent particulate matter size and mass.

Self-isolation and potential exposure of the coronavirus disease 2019 (COVID-19) were spotlighted as notable issues affecting addiction management; hundreds of scientists have called for the World Health Organization (WHO) to revise recommendations on COVID-19 as they highlight the airborne properties of the virus; considering safety measures and other factors when exercising in public gyms.

States hardest hit by resurgent cases of coronavirus disease 2019 (COVID-19) have taken steps to either halt or reverse plans to reopen economies; study findings suggest patients with asthma are no more likely than those without asthma to be hospitalized for COVID-19; the Trump administration plans to adopt a decades-old testing strategy called pooled testing that would expand testing efforts in the United States.